The metrical requirements of Persian poetry are highly restrictive. Traditionally, the rigidity of the metrical system was compensated for by a high degree of flexibility in the poetic language in terms of lexicon, phonology, and morpho-syntax. Using statistical data from different periods of Persian poetry, this paper argues that the degree of flexibility of the language used in metrical Persian poetry has been in constant decrease, moving towards what may potentially be a language crisis for metrical Persian poetry. This study traces the linguistic and meta-linguistic origins of the initial flexibility of the poetic language and its subsequent change, suggesting that some of the recent trends in Persian poetry may be viewed in part as reactions to this potential crisis.

中文翻译：

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语言变化与格律波斯诗歌的未来

波斯诗歌的格律要求非常严格。传统上，格律系统的僵化被诗歌语言在词汇、音韵和形态句法方面的高度灵活性所补偿。使用波斯诗歌不同时期的统计数据，本文认为格律波斯诗歌中使用的语言的灵活性程度一直在下降，这可能是格律波斯诗歌的语言危机。这项研究追溯了诗歌语言最初的灵活性及其随后的变化的语言和元语言起源，这表明波斯诗歌的一些近期趋势可能部分被视为对这一潜在危机的反应。